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Como indexar e fatiar strings em Python 3 — step-by-step Python tutorial on Progressive Robot

Como indexar e fatiar strings em Python 3

O tipo de dados string do Python é uma sequência composta por um ou mais caracteres individuais, que consistem em letras, números, caracteres de espaço em branco ou símbolos. As strings são sequências e podem ser acessadas das mesmas maneiras que outros tipos de dados baseados em sequências, através da indexação e divisão. Este tutorial ensinará como acessar strings através da indexação e como dividir suas sequências de caracteres; ele também abordará métodos de contagem e localização de caracte

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Como Instalar o Nginx no Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

Como Instalar o Nginx no Ubuntu 16.04

O Nginx é um dos servidores web mais populares no mundo e é responsável por hospedar alguns dos maiores e mais acessados sites na internet. Ele possui mais facilidades de recursos do que o Apache em muitos casos e pode ser utilizado como servidor web ou proxy reverso. Neste…

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How to Harden SSH on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Harden SSH on RHEL 9

SSH is the primary remote access method for Linux servers, making it a common target for brute-force attacks, credential stuffing, and exploitation attempts. On RHEL 9, the default OpenSSH configuration works out of the box but leaves several attack vectors open. Hardening your SSH server configuration significantly reduces the risk of unauthorized access and is […]

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Common Problems 112962

Windows Server 2016 — DHCP scope exhaustion caused by stale reservations and delayed lease reclamation — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Windows Server 2016 📖 ~2 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution — Primary Fix Solution — Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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Amazon Linux 2 — libplist — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — libplist — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2023-2067 Related CVEs: CVE-2015-10082 Upstream summary: A vulnerability classified as problematic has been found in UIKit0 libplist 1.12. This affects the function plist_from_xml of the file src/xplist.c of the component […]

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How to Configure Cloud-Init on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure Cloud-Init on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure cloud-init on ibm aix 7.1 on IBM AIX […]

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How to Set Up Datadog Agent on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Set Up Datadog Agent on SLES 12

Introduction This tutorial covers How to Set Up Datadog Agent on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to date: zypper […]

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